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<TITLE>sane-devel: Re: Epson Perfection 1200 Photo USB crashes</TITLE>
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<H1>Re: Epson Perfection 1200 Photo USB crashes</H1>
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<STRONG>From:</STRONG> Karl Heinz Kremer (<A HREF="mailto:khk@khk.net?Subject=Re:%20Epson%20Perfection%201200%20Photo%20USB%20crashes&In-Reply-To=&lt;20001227194355.B12061@khk.net&gt;"><EM>khk@khk.net</EM></A>)<BR>
<STRONG>Date:</STRONG> Wed Dec 27 2000 - 16:43:56 PST
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Per,
<BR>
<P>the problem is very likely caused by a USB timeout. The USB
<BR>
scanner driver does not wait long enough for data - or the
<BR>
EPSON scanners are a little to slow to send the first byte
<BR>
of data after a &quot;Start scan&quot; command.
<BR>
<P>You can fix this yourself if you are willing to recompile your
<BR>
kernel: Edit the file linux/driver/usb/scanner.h and look for
<BR>
a line that starts with
<BR>
<P>#define RD_NAK_TIMEOUT (10*HZ)
<BR>
<P>Change the 10 to 20 and everything should work.
<BR>
<P>You can find this information also on my FAQ page at
<BR>
<A HREF="http://www.freecolormangement.com/sane/faq.html">http://www.freecolormangement.com/sane/faq.html</A>
<BR>
<P>Karl Heinz
<BR>
<P><P>On Thu, Dec 28, 2000 at 12:21:06AM +0100, Per Aalrust wrote:
<BR>
<EM>&gt; Hi everybody,
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; I have been working for a while with sane 1.0.3 (epson backend V0.1.35)
</EM><BR>
<EM>&gt; and the above named scanner. If scanning full size in color mode the
</EM><BR>
<EM>&gt; scanner
</EM><BR>
<EM>&gt; and/or the usb-port sometimes crashes?! On the command line I get the
</EM><BR>
<EM>&gt; message
</EM><BR>
<EM>&gt; &quot;[epson] error in receive - status = 5&quot; (sometimes 9 instead of 5).
</EM><BR>
<EM>&gt; After that error I have to do a reset, because there is no way to do any
</EM><BR>
<EM>&gt; further scanning. Linux is still alive, but the scanner and sane hangs.
</EM><BR>
<EM>&gt; Scanning in gray and binary mode works fine so far.
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; Anybody out here who has a good idea that helps?
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; Best regards
</EM><BR>
<EM>&gt; Per
</EM><BR>
<EM>&gt;
</EM><BR>
<EM>&gt; --
</EM><BR>
<EM>&gt; Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
</EM><BR>
<EM>&gt; To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20Epson%20Perfection%201200%20Photo%20USB%20crashes&In-Reply-To=&lt;20001227194355.B12061@khk.net&gt;">majordomo@mostang.com</A>
</EM><BR>
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